/*
* @Author: Josh
* @Date:   2019-01-29 09:20:47
* @Last Modified by:   Administrator
* @Last Modified time: 2019-04-27 16:24:04
*/
'use strict';
require('page/common/nav/index.js');
require('page/common/header/index.js');
require('./index.css');

var _mall         = require('util/mall.js'),
    _product      = require('service/product-service.js'),
    _cart         = require('service/cart-service.js'),
    templateIndex = require('./index.string');
    
var page = {
    data : {
        productId : _mall.getUrlParam('productId')  || ''
    },
    init : function(){
        this.onLoad();
        this.bindEvent();
    },
    onLoad : function(){
        //如果没有传入productId 则跳转到首页
        if(!this.data.productId){
            _mall.goHome();
        }
        this.loadDetail();
    },
    bindEvent : function(){
        var _this = this;
        // 图片预览
        $(document).on('mouseenter', '.p-img-item', function(){
            var imageUrl = $(this).find('.p-img').attr('src');
            $('.main-img').attr('src', imageUrl);
        });
        // count的操作
        $(document).on('click', '.p-count-btn', function(){
            var type      = $(this).hasClass('plus') ? 'plus' : 'minus',
                $pCount   = $('.p-count'),
                currCount = parseInt($pCount.val()),
                minCount  = 1,
                maxCount  = _this.data.detailInfo.stock || 1;
            if(type === 'plus'){
                $pCount.val(currCount < maxCount ? currCount + 1 : maxCount);
            }
            else if(type === 'minus'){
                $pCount.val(currCount > minCount ? currCount - 1 : minCount);
            } 
        });
        
        // 加入购物车操作
        $(document).on('click', '.cart-add', function(){
            _cart.addToCart({
                productId : _this.data.productId,
                count     : $('.p-count').val()
            }, function(res){
                window.location.href = './result.html?type=cart-add';
            }, function(errMsg){
                _mall.errorTips(errMsg);
            });
        });
    },

    //加载商品详情数据
    loadDetail : function(){
       var _this     = this,
           html      = '',
           $pageWrap = $('.page-wrap');
       
       // loading
       $pageWrap.html('<div class="loading"></div>');

       // 请求detail信息
       _product.getProductDetail(this.data.productId, function(res){
           //处理图片数据
           _this.filter(res);
           //缓存detail的数据
           _this.data.detailInfo = res;
           //render
           html = _mall.renderHtml(templateIndex, res);
           $pageWrap.html(html);
       }, function(errMsg){
           $pageWrap.html('<p class="err-tip">此商品太淘气，找不到了！</p>');
       });
    },

    //数据匹配
    filter : function(data){
        data.subImages = data.subImages.split(',');
    }
};

$(function(){
    page.init();
})